Double pole membrane switch having preferred sequence closing feature.

MEMORY

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83,647 llojn núcn.

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3.5 "k of memora unq suoer

EUDei ': ^ This invention relates to switches of the membrane of the tico in which two contacts of a surface are coupled with a contact in a second supeficiary when the switch is closed. The invention refers to partipul.ar • · • · ...

The sequence in the cue is coupled to each other loe; '. switch contacts when the switch is closed.

A widely used type of commutator is used to connect circuit conductors in

I ficie a conductor · surface of a second cié. A commutator of this type is of the single push mode c double pole in which, when one of the • ·· is depressed.

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membranes towards the other membrane, a conductor is connected to two conductors of the other membrane. ** "«

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In known types of membrane switches of the single double pole thrust class, the two contacts of the switch of a surface will engage or contact a switch contact of the second surface, essentially simultaneously, in most cases when it 'closes. However, it is always possible for one of the contacts of the first surface to be applied or brought into contact with the sole contact of the supe fi ed signal before the second contact of the first surface is brought into contact with the contact. unique on the second surface. Sequential closure of this type can occur, for example, when the person operating the

07053 llojn núm. The device in which the switch is provided presses or presses the side of the switch with a pointed instrument, such as a pencil tip, so that the closing force is applied only to a localized area. most of

· ·

The membrane switches are designed for. be 'close!

...

The pressure of a finger is applied and if the pressure of the finger is applied, the closing force is distributed over a laughing area;

* «• faith · ·. · · Tively extensive instead of concentrating on a 303.a. .very ;

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Ln many electronic devices, do not have with;

- -> /. i sequences the aue the push switch contacts:

* ··. i * · * *!

single double-pole do not fit or are put in counter i.

* · · · Í • · mutual at the same moment. However, it is important * én • * * some devices to avoid certain sequences * tie i

Close if the device has to work in its previous way, ta. If only the two contacts of one with • | The single-pole double-pole matador in some electronic devices will give rise to a completely nasty result and the operator can deduce that there is a defective operation of the device. The probability of an unsuitable closing signal in a given switch!

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it is very small, but it is, nevertheless, important that the switch is designed to completely exclude the sequence.

inadequate closure.

EJ. present invention is directed to the consecuI

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I loja nfnn 3

25

of a single push-button diaphragm switch and double pole, which, when closed, will imperatively exclude the possibility of one of the contacts being connected to a second of the contacts before it is switched on. - • • • I contact. In other words, the invention is di ected. "* Ια the achievement of a membrane switch in which a preferred contact closure sequence will be followed ¡* · · · ·:

or all contacts will be opted to coupling ·, mutual ii simultaneously. i.

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A membrane switch device according to the invention comprises Orimar® insulating horns and is

2nd, parallel, spaced, having surfaces, cpuss- · *** First and second and have opposite concacmo means · * ^% i on opposite surfaces that form an electrical switch?

The

At least one of the supports is flexible, so that the

I supports can be moved relatively towards each other and

I against each other until the opposite contacts are one | against other. A switch according to the invention is particularly characterized in that the contact means of the first surface comprise two electrical contacts.

»Trically separated and adjacent, having one of the con; touches a first part of main contact of surface and a part, common. The other contact of the first super t

ficie has a common part that is adjacent to the coί mm part of the main contact part, the two common parts;

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PIfoja ηήιη nes define a common area on the first surface, the contact means of the second surface comprise a,

t part of the second surface main contact and one | part in common of second surface that is electrically-? * ·^one You are isolated from the main contact part of the second and third: I surface. The part in common of the second surface is-- 'ΐ

tá located in such a way that it is against the common area

I * í on the first surface when the second surface''ds' * · moved relatively against the first surface. The contact surface of the second surface is against the main contact part of the first surface when. · - '^{b <} The surfaces are against each other. A conductor of the second surface, located in the second super surface, reaches the main contact part of the second surface and circuit conductors of the first surface. they arrive until the two contacts of the first superfit. 1 cié. In the relative movement of the second surface towards the first surface, the circuit conductor of the second surface will be electrically connected to both circuit con- ductors of the first surface and the connection sequence will exclude the possibility of the circuit conductor of the second surface is connected to the other

contact of the first surface before it is connected to the main contact part of the. first surface.

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ΓIfoj η no. 5 . twenty

C7O53 the first surface, the common area, »* ·,

the .second surface are sensihlímen i

it's a fragmentary view of a couple

According to further embodiments, the contact necks on the first surface comprise a central touch of the first surface and a peripheral contact that surrounds the central contact. The common parts include · · * · extensions or extensions common that se'd | 5? I * "· gene towards each other.

According to further embodiments, the peripheral contact of and the common part of circular tea.

The figure gives you a panel containing an individual switch * * ^ according to the invention. * ./>

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Figure 2 is a view similar to Figure 1, but showing parts of the commutator exploded.

Figure 3 is a plan view of one of the insulating supports of the switch and showing the two switch contacts on the support.

Figure 4 e3 a plan view of the surface of the other support showing the contacts of the switch on the other support.

Figure 5 is a plan view showing 1ε mutual relationship of the contacts of the switch of Figures 3 and 4 when the switch is closed.

HoJh no. twenty

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As seen in Figures 1 and 2, a switch assembly 2 according to the invention comprises a base member 4, a first insulating support 6 having contact means 22 therein, a separator 8, a follower * * · Do. Insulating support 10 that has contact means »24 * 'and. '»Or * a cover 12. The cover is somewhat flexible and tends to! 1 switch comm indicated by 14 by a number or another brand. The support 6 has an upper surface 16 q-úc * 'é'stú * ♦ * opposite the lower surface 18 of the supefidr support

10, The separator 8 has an opening 20 in the place of the switch, so that the flexible upper support 'ΊΟ <- \ can be moved down to close the switch .. · The supports 6, 10 can be made of polyester or give another appropriate peai-oula and drivers, including contacts, eg. commutator, can be metallic conductors, produced by electro-deposition, or can be shielded on conductive inks. In the following description, the surface 16 is called the first surface and the surface 18 is called the second surface.

Referring to Figure 3, the switch contact means 22 of the surface 16 compresses a central contact 26 of the first surface and a peripheral centimeter 28. The peripheral contact is generally circular and surrounds the central contact. Circuit conductors 30 and 32 of the first surface arrive coarse the? Η oj η num

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1520 central contact 26 and peripheral contact 28, respectively. These circuit conductors are extended normally, up to the controlled ones by the commutator.

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The central contact 26 of the first sunecfipie ^: > * ¡• "· 'comprises a main contact bar 34 that is extended

It runs through the center of the commutator site and joins the circuit conductor 30. Common extensions 36 extend from the main contact bar._r · »¡. ·ⁿ pal 34 as branches that are normally directed to the axle of the contact bar. Some common extensions^one additional 3θ go from the main contact bar ·

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next to the ends of the bar 34 and the extensions are somewhat shorter than the extensions 36 by * raso-:

which will be evident. Additional branches extend laterally from the main contact bar, eg. i ro these branches do not participate in the common function realisañaj *_t I by the extensions 36, 38; the extensions 40 are 'j

I present to ensure that the central contact 50 of the second surface is applied to the center contact 26 of the first surface.

The ceramic contact 28 is not a common circle.

I pleto, but it has ends 42. A plurality of common 44 peripheral contact outputs range from!

peripheral contact inwards, towards the bar 34 of the touch inside the first surface.

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ΡHojn ηίίιτη. β

The free ends of the extensions 36, and 44 are adjacent to each other and define a circular shortening or common area, indicated, at 48 by dashed line in Figure 3. In the embodiment described, these free ends of the common extensions 36, 44 is so '.

i lapan and, in any case, the free ends have to be ~:

They are sufficiently close to each other to allow them: co% · · ^one electrically interconnected by a cei bad conductor 58 on the surface 18, as will be described below.

• i

The means of contact 24 to the second sr <? «Rfi-:

• · cié 18, which is the surface-inferior of the second sbp & rte i

insulator 10, comprise a central contact 50 of the according to · i

The surface contact and a common contact 58 surrounding the central contact 50. The central contact 50 is circular in shape, j but has an open center through which it will pass.

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ductores 56 · This design is used in order to reduce «ya i · · · J

The amount of ink required is rare in the circle. As previously explained, the extensions 40 of the rod 34 are brought into contact by the circular part 50 and the bars 56 of the central contact of the second surface when the switch is closed.

The common conductor 58 is generally circular, but is a full circle and the circuit conductor 52 'goes from the center conductor through the separation gap resulting in the common conductor 58. The conductor i

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✓ tfojn num is opposite and adapts to the shape and size of the common area '' I 48 of surface 16.!

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In use, when you press active area 14 of the! cover 12, the membrane support 10 is flemiona

below and the contact media 24 of surface 18 are i

brought into engagement with the contact means 22 cn;

· · one • · .

the surface 16, so that the circuit conductor • · ·. * · *.

The second surface is connected to conductors of * Circuit 80, 32 of the first surface, 'If the closing force is applied uniformly to • ft ··. · An extensive part of the areas of active zone 14, 'there is a probability that the contacts 50, 58 of the surface 1 • 18 are simultaneously coupled to the contacts 261 * 1 * 8 ¡. * * ·>

of the sunerficie 16. If the coupling is achieved * ¿kx.'ul- ....!

taneous, the central contact 50 of the second super fi fe-'se

•., I will contact the central contact 26 of the first;

* Surface and the common conductor 58 will move towards zone i

48 so as to extend over the ends, free of the extensions 36, 44. The common conductor ^!will thus provide a conductive path from the contac-

I 'central'. 26 of the first surface up to the peripheral contactors 28 of the first surface 16, *

However, if a closing force is applied to area 14 and the closing force nb is in the center of the zone, it is possible that the common conductor 5 · δ

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I. Iojh no moved against, and contact with, the free ends of the s

extensions 36 »44 and the central contact 50 of the second surface will not come into contact with the central contact 26 of the first surface 16. However, if this happens, the circuit conductor 52 is not connected to any of drivers 30, 32 because of the driver '· · ·. > • · · common 58 is electrically isolated from the central contact • • • • • • second surface. If the operator does not * 'immediately close the switch, the contact 50 will be applied to the contact 26 when the additional closing force is applied and the circuit conductor 52 will be connected to the cognac.]

Circuit sensors 30, 32 simultaneously. ^one

It will be apparent from the foregoing description that it is possible to connect the circuit conductor 52 to the circuit bus 32 before it is connected to the circuit conductor 30 · ba only sequence -possible not simultaneously is the connection from the circuit conductor 52 to the conductor of circuit 30, followed by the connection of the circuit conductor 52 to the circuit conductor 32 while maintaining the connection to the circuit conductor 30.

A switch according to the invention can have contacts that have shapes significantly different from the shapes of the contacts shown in the drawings and described above. The position of the central and peripheral contacts in the described embodiment is probablj

07053? T (oj η n ú m.) 3.1 the most logical arrangement of contacts according to the invention, however, the main contact of the first surface may simply have extensions of

shortening or commons that protrude laterally from | The center of the commutator zone and the second contact i on the first surface can have simply prolonga-;

ί Common interlaced common laran · · · **,,,, z z z van van van van van van van van van van van van van van desde desde desde The common contact of the surface will be, as previously described,^oneaccording to the shape and size of the common area qu.As. First surface and electrically isolated άς1 '· ο.οη main touch of the second surface to which it extends, the second surface circuit conductor.

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The points that as a feature of novelty are presented to be the subject of this application for a Utility Model in Spain, for TWENTY years, are those that are collected